What is a Scutum in anatomy?
The scutum (plural: scuta) is a sharp bony spur that is formed by the superior wall of the external auditory canal and the lateral wall of the tympanic cavity. It forms the lateral margin of Prussak space.
What is epitympanum?
The epitympanum, also known as the attic or epitympanic recess, is the most superior portion of the tympanic cavity. It is that portion of the tympanic cavity superior to the axial plane between the tip of the scutum and the tympanic segment of the facial nerve 1,3.
What is Prussaks space?
Prussak space is a subcomponent of the lateral epitympanic space and extends from the level of the scutum to the umbo. This space is best demonstrated on the oblique coronal image.
What is cholesteatoma of attic?
An attic cholesteatoma is defined as an epidermoid cyst found in the attic. This is differentiated from an infected retraction pocket of the pars tensa or a retraction pocket cholesteatoma.
What is Scutum in insect?
Definition of ‘scutum’ 1. the middle of three plates into which the notum of an insect’s thorax is divided. 2. another word for scute.
What is processus Cochleariformis?
The processus cochleariformis is a spoon-shaped bony angular process above the promontory at he end of the canal for the tensor tympany and at the anterior end of the vestibular window, forming a pulley over which the tendon of the tensor tympani muscle plays.
Do Cholesteatomas enhance?
Cholesteatomas demonstrate: T1: low signal. T2: high signal. T1 C+ (Gd): no enhancement.
Is cholesteatoma a tumor?
Overview. Cholesteatoma is a problem involving skin of the eardrum or ear canal growing into middle ear and its surrounding areas. Its name is misleading as it is not a tumor however, if left untreated, it can become invasive and destructive.
What is a Scutum in Drosophila?
The scutum is the largest dorsal sclerite of the notum and is bounded posteriorly by the scutoscutellar suture, which divides the notum into the scutum and scutellum. The scutellum is generally smaller than the scutum.
What does the term scutum mean in medical dictionary?
In ixodid (hard) ticks, a plate that largely or entirely covers the dorsum of the male and forms an anterior shield behind the capitulum of the female or immature ticks. [L. shield] Farlex Partner Medical Dictionary © Farlex 2012 scutum (skyo͞o′təm) n.pl.scu·ta(-tə) 1. A scute. 2.
What kind of bony spur is the scutum?
Dr Tim Luijkx ◉ ◈ and Dr Jeremy Jones ◉ et al. The scutum (plural: scuta) is a sharp bony spur that is formed by the superior wall of the external auditory canal and the lateral wall of the tympanic cavity. It forms the lateral margin of Prussak space.
Where is the scutum located in the ear?
Dr Daniel J Bell ◉ and Dr Jeremy Jones ◉ et al. The scutum is a sharp bony spur that is formed by the superior wall of the external auditory canal and the lateral wall of the tympanic cavity.
What is the scutum of a hard tick?
In ixodid (hard) ticks, a plate that largely or entirely covers the dorsum of the male and forms an anterior shield behind the capitulum of the female or immature ticks. [L. shield] Medical Dictionary for the Health Professions and Nursing © Farlex 2012 scutum the middle of the three dorsal thoracic SCLERITESof an insect.